JP2014045610A - Transmission line snow and ice accretion monitoring system and transmission line snow and ice accretion monitoring device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transmission line snow and ice accretion monitoring system and a transmission line snow and ice accretion monitoring device capable of detecting snow and ice accretion reliably in a transmission line.SOLUTION: In a transmission line snow and ice accretion monitoring system 1, a transmission line snow and ice accretion monitoring device 10 includes: a distance measuring section 11 provided above a jumper wire 103, which is a part of a transmission line 102 and strung from a steel tower 101 for supporting the transmission line 102, and measuring the distance to the jumper wire 103 by means of a distance sensor 20; a snow and ice accretion measuring section 12 for measuring snow and ice accretion amount in the jumper wire 103 on the basis of the distance measured by the distance measuring section 11; and a relay 40 for transmitting the snow and ice accretion amount thus measured to a monitoring processing device 50. The monitoring processing device 50 includes: a snow and ice accretion determination unit 51 for determining whether or not snow and ice are accreting on the basis of the snow and ice accretion amount thus received; and an alarm unit 52 for outputting an alarm when the snow and ice accretion determination unit 51 determines that snow and ice are accreting.

Description

  The present invention relates to a power transmission line icing snow monitoring system and a power transmission line icing snow monitoring device.

  Conventionally, various safety measures have been taken for power transmission lines for sending electricity from power plants. For example, if the safety measures for the power transmission line are neglected, for example, icing and snowing on the electric wire, a system failure may occur due to disconnection due to weight increase, collapse of a steel tower, or a jump, etc., making it impossible to supply high-quality electricity. Patent Documents 1 to 3 are known as methods for detecting the icing snow condition that causes such an equipment accident.

  The snow accretion detection apparatus disclosed in Patent Document 1 detects an inclination amount of a torsion preventing damper attached to a power transmission line by using an inclination detector, and detects icing snow on the transmission line based on the detected inclination amount.

  The snow detection device of Patent Document 2 simulates the state of an overhead electric wire that is energized by a short electric wire incorporating a heater and a spring that imitates the torsional rigidity of the electric wire. Installed in the vicinity of the overhead electric wire, the twist of the short electric wire is measured based on the rotation of the short electric wire due to the movement of the center of gravity based on the snow accretion, and the icing snow is detected.

  In the snow-covered shape detection device of Patent Document 3, a large number of displacement sensors that include a light source and a light receiver that receives reflected light and measure the distance to an object to be measured are fixedly arranged on a circumference centered on an electric wire. It is a device. The snow accretion shape detection apparatus comprehensively processes the distance data measured by the arranged displacement sensors to detect the snow accretion shape.

Japanese Patent Laid-Open No. 05-146018 Japanese Patent Laid-Open No. 06-153351 Japanese Patent Laid-Open No. 10-267625

  However, in the invention disclosed in Patent Document 1, since the sensor detects the amount of inclination due to twisting of icing snow, when the torsion prevention damper is likely to swing in a strong wind (for example, in the case of a multi-body electric wire), the sensor is twisted. The amount of tilt due to is detected. In such a case, the invention disclosed in Patent Document 1 cannot detect a certain amount of icing snow. Moreover, the sensor attached to the torsion prevention damper is between the diameters of the power transmission lines, and it is difficult to perform normal maintenance and respond to malfunctioning devices. Furthermore, it is conceivable that if the sensor is frozen and snowed, the sensor will break down and break down.

  Since the invention disclosed in Patent Document 2 measures the simulated state of an actual overhead wire, the amount of icing snow may not be detected depending on the performance of the heater and spring, the installation location, and the like. Furthermore, although solar cells and batteries are used as the sensor supply power, they are easily affected by bad weather for a long period of time, and there are restrictions on stable power supply. Further, the invention disclosed in Patent Document 3 requires a large number of sensors, needs to perform comprehensive data processing, and is not realistic.

  Therefore, there is a need for a system that can reliably detect icing snow on a transmission line.

  It is an object of the present invention to provide a transmission line icing snow monitoring system and a transmission line icing snow monitoring apparatus that can reliably detect icing snow on a transmission line.

The present invention provides the following solutions.
(1) A transmission line icing / snow monitoring system for monitoring the amount of icy snow on a transmission line, above a jumper line that is part of the transmission line and is suspended on a steel tower that supports the transmission line A distance measuring means for measuring a distance from the jumper wire, an ice accumulating snow amount measuring means for measuring an amount of ice accumulating on the jumber line based on the distance measured by the distance measuring means, Based on the amount of icing snow measured by the icy snow amount measuring means, an icing snow judging means for judging whether or not the icing snow is detected, and an alarm when it is judged by the icing snow judging means that the icing snow has been found. A transmission line icing snow monitoring system comprising:

  According to the configuration of (1), the transmission line icing and snow monitoring system according to the present invention is a distance measurement provided above a jumper line that is a part of the transmission line and is suspended on a steel tower that supports the transmission line. The means measures the distance to the jumper line, the icing snow amount measuring means measures the amount of icing snow on the jumber line based on the distance measured by the distance measuring means, and the icing snow judgment means measures the icing snow amount. Based on the amount of icing snow measured by the measuring means, it is determined whether or not icing snow has occurred, and if the alarm means determines that the icing snow determination means is icing snow, an alarm is output.

  Therefore, the power transmission line icing snow monitoring system according to the present invention measures the amount of icing snow on the jumber line that is a part of the actual power transmission line, and therefore can reliably detect icing snow on the power transmission line.

  (2) The transmission line icing snow monitoring system according to (1), wherein the icing snow determination means determines that icing snow has occurred when the amount of icing snow is a predetermined amount or more continuously for a predetermined time. .

  Therefore, the power transmission line icing snow monitoring system according to (2) can more reliably detect icing snow on the power transmission line.

  (3) A transmission line icing snow monitoring device that measures the amount of icing snow that has landed on a transmission line and transmits the measured amount of icing snow to a monitoring processing device, wherein the icing snow monitoring device is a part of the transmission line, A distance measuring unit that is provided above a jumper line suspended on a steel tower that supports a power transmission line and measures a distance from the jumper line, and a landing on the jumber line based on the distance measured by the distance measuring unit. A transmission line icing snow monitoring device comprising: an icing snow amount measuring unit for measuring an icy snow amount; and a transmitting unit for transmitting data on the icing snow amount measured by the icing snow amount measuring unit to the monitoring processing device.

  According to the configuration of (3), the transmission line icing and snow monitoring device according to the present invention is provided above the jumper line that is a part of the transmission line and is suspended on the steel tower that supports the transmission line. Is measured, the amount of icing snow on the jumper line is measured based on the measured distance, and the measured amount of icing snow is transmitted to the monitoring processor.

  Therefore, the power transmission line icing snow monitoring device according to the present invention can reliably detect icing snow on the power transmission line.

  (4) The power transmission line icing snow monitoring device according to (3), further comprising: power supply means for supplying power to the distance measuring means, the icing snow amount measuring means, and the transmitting means based on the induced voltage by the power transmission line. .

  Therefore, the power transmission line icing snow monitoring device according to (4) can constantly monitor without being affected by the weather or the like, and can provide data for reliably detecting icing snow on the power transmission line.

  According to the present invention, since the actual amount of icing snow on the electric wire is measured, the amount of icing snow taking into account the melting of the icing snow due to the heat generated by the electric wire can be measured, and the icing snow on the transmission line can be reliably detected. Moreover, this invention can detect the amount of icing and snowing on an actual electric wire regardless of the influence of a strong wind or the type of electric wire by installing a distance sensor on the steel tower above the jumper wire. Furthermore, since the induced voltage by a power transmission line is used as a power supply, the present invention can reliably detect icing snow on the power transmission line for a long period of time. Therefore, according to the present invention, the operator can check the amount of snow on the electric wires, and can prepare for an accident and perform pre-treatment such as system switching if necessary.

It is a figure which shows an example of the power transmission line icing snow monitoring system which concerns on one Embodiment of this invention. It is a figure which shows the example of the installation location of the power transmission line icing snow monitoring apparatus which concerns on one Embodiment of this invention. It is a figure which shows an example of the power transmission line icing snow monitoring apparatus which concerns on one Embodiment of this invention. It is a figure showing an example of composition of a power transmission line icing snow monitoring system concerning one embodiment of the present invention. It is a flowchart which shows the processing content of the power transmission line icing snow monitoring apparatus which concerns on one Embodiment of this invention. It is a flowchart which shows the processing content of the monitoring processing apparatus which concerns on one Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing an example of a transmission line icing snow monitoring system 1 according to an embodiment of the present invention. FIG. 2 is a diagram illustrating an example of an installation location of the transmission line icing and snow monitoring device 10 according to the embodiment of the present invention. FIG. 3 is a diagram illustrating an example of the power line icing snow monitoring device 10 according to an embodiment of the present invention. FIG. 4 is a diagram showing an example of the configuration of the transmission line icing snow monitoring system 1 according to an embodiment of the present invention.

  As shown in FIG. 1, the transmission line icing / snow monitoring system 1 includes a transmission line icing / snow monitoring device 10 (including a repeater 40) and a monitoring processing device 50.

  The transmission line icing / snow monitoring device 10 is installed on a steel tower 101 that supports the transmission line 102, monitors icing snow, and receives data (for example, measured distance, amount of icing snow, temperature data, etc.) via the repeater 40. Is transmitted to the monitoring processor 50. The monitoring processing device 50 receives data transmitted from the power line icing / snow monitoring device 10 via the repeater 40, determines whether or not icing snow has occurred, and issues an alarm when determining that icing snow has occurred. Is output.

  As shown in FIG. 4, the transmission line icing snow monitoring device 10 includes a distance measuring unit 11, an icing snow amount measuring unit 12, a power supply unit 13, and a repeater 40. The monitoring processing device 50 includes an icing snow determination unit 51 and an alarm unit 52. Hereinafter, each part will be described.

  The distance measuring unit 11 is a part of the power transmission line 102 and is provided above the jumper wire 103 suspended on the steel tower 101 that supports the power transmission wire 102, and measures the distance from the jumper wire 103. Specifically, the distance measuring unit 11 includes a distance sensor 20 that measures the distance from the jumper wire 103.

As shown in FIGS. 2 and 3, the distance sensor 20 (for example, an ultrasonic sensor or the like) transmits an ultrasonic wave toward the jumber line 103 by a transmitter and receives the reflected wave by a receiver. , Measure the distance L. That is, the distance sensor 20 does not have to be vertically above the jumper line 103, but is installed at a position where it can receive a reflected wave from the ice snow 301 that has landed on the jumber line 103.
Specifically, the distance measuring unit 11 includes a temperature sensor that measures the air temperature, performs temperature correction of the sound speed based on the measured air temperature, the time required from transmission to reception of the ultrasonic wave, and the temperature corrected sound speed. Based on the above, the distance L from the transmitter to the ice and snow 301 on the jumper line 103 is calculated. For transmitting and receiving ultrasonic waves, for example, a piezoelectric ceramic is used. Furthermore, the distance sensor 20 detects only a reflected wave from a wave existing within a detection distance range set by the distance adjustment volume (for example, within a range including a distance to the jumber line 103 where no icing and snowing). Since the distance sensor 20 is connected to the steel tower 101 by the support portion 33 and grounded, it is not affected by abnormal current or the like.

  The icing snow amount measuring unit 12 measures the amount of icing snow on the jumper line 103 based on the distance measured by the distance measuring unit 11. Specifically, the icing snow amount measuring unit 12 subtracts the distance L measured by the distance measuring unit 11 from a predetermined basic distance to measure the icing snow amount. The predetermined basic distance is a distance between the distance measuring unit 11 and the jumber line 103 that is not icing and snowing, and is a basic distance that is measured and set every time the transmission line icing and snowing monitoring device 10 is installed. .

The power supply unit 13 supplies power to the distance measuring unit 11, the amount of icing snow measurement unit 12, and the repeater 40 based on the induced voltage by the power transmission line 102.
For example, the induction voltage is generated by winding the coil 32 around the induction bar 31 as shown in FIG. As another example, the induction voltage may be generated in an induction coil wound around a ferrite core mounted so as to surround the transmission line 102 based on an alternating current flowing through the transmission line 102 (not shown). . The power supply unit 13 converts an alternating current generated by the induced voltage into a direct current by an AC / DC converter and supplies the direct current to the distance sensor 20. In addition to the distance sensor 20, the power supply unit 13 supplies power to each operation unit (for example, the icing and snow amount measuring unit 12, the repeater 40 that transmits data, and the like). For example, a storage battery or a battery may be provided as a standby power source.

  The repeater 40 transmits the data on the amount of icing snow measured by the icing snow amount measuring unit 12 to the monitoring processing device 50. The repeater 40 may transmit other data such as distance data measured by the distance measuring unit 11 and data such as temperature measured by a temperature sensor. The monitoring processing device 50 receives the data transmitted from the repeater 40.

Based on the received amount of icing snow, the icing / snow determining unit 51 determines whether or not the icing / snowing is in real time. Specifically, the icing snow determination unit 51 determines that icing snow has occurred when the amount of icing snow is continuously greater than or equal to a predetermined amount over a predetermined time (for example, 30 seconds).
Furthermore, the icing / snow determining unit 51 may determine that icing / snowing is occurring when the amount of icing snow continuously increases. If the amount of icing snow suddenly increases (for example, if it increases by 1 cm or more per second), such as when a bird stops on the jumper line 103, or when garbage adheres to it, it is not icing snow. Can be determined. Furthermore, the icing / snow determining unit 51 generates icing / snow when the temperature in the vicinity of the steel tower 101 indicated by the temperature data received from the transmission line icing / snow monitoring device 10 is equal to or lower than a predetermined temperature (for example, 0 ° C. or lower). It may be determined that The icing snow determination unit 51 can reliably determine icing snow on the power transmission line.

  The icing / snow determining unit 51 is based on the measurement of one of the transmission line icing / snow monitoring devices 10 installed in each of the three phases of the transmission line 102 supported by the steel tower 101. When it is determined that icing snow has occurred, it may be determined that the three phases of the transmission line 102 for the tower 101 are icing snow.

  The alarm unit 52 outputs an alarm in real time when it is determined by the icing / snow determining unit 51 that the icing / snow has been icing. Specifically, the alarm unit 52 performs alarm in real time by turning on an alarm lamp, outputting an alarm sound, outputting an alarm message, and the like.

  FIG. 5 is a flowchart showing the processing contents of the transmission line icing and snow monitoring device 10 according to an embodiment of the present invention. The transmission line icing / snow monitoring device 10 is configured by a computer and hardware included in its peripheral devices and software for controlling the hardware, and the following processing is performed by a control unit (for example, CPU) of the transmission line icing / snow monitoring device 10. Is a process executed according to predetermined software.

  In step S11, the power transmission line icing snow monitoring device 10 (distance measuring unit 11) measures the distance at regular time intervals. More specifically, the transmission line icing snow monitoring device 10 is corrected by the time required from the transmission of the ultrasonic wave to the reception by the distance sensor 20 and the air temperature by the temperature sensor every predetermined time (for example, 1 second). The distance is calculated based on the sound speed. Thereafter, the power transmission line icing and snow monitoring device 10 moves the process to step S12.

  In step S12, the power transmission line icing snow monitoring device 10 (the icing snow amount measuring unit 12) measures the icing snow amount based on the measured distance. More specifically, the power transmission line icing / snow monitoring device 10 subtracts the distance measured in step S11 from a predetermined basic distance (basic distance to the jumber line 103 when no icing snow is present). Measure the amount. Thereafter, the power transmission line icing and snow monitoring device 10 moves the process to step S13.

  In step S <b> 13, the power transmission line icing snow monitoring device 10 (repeater 40) transmits the measured amount of icing snow. More specifically, the power transmission line icing / snow monitoring device 10 transmits the measured temperature data and the like together with the icing / snow amount measured in step S <b> 12 via the repeater 40. Thereafter, the power transmission line icing and snow monitoring device 10 moves the process to step S11.

  FIG. 6 is a flowchart showing the processing contents of the monitoring processing apparatus 50 according to an embodiment of the present invention. The monitoring processing device 50 is configured by hardware included in a computer and its peripheral devices and software for controlling the hardware. The following processing is performed by a control unit (for example, a monitoring processing device 50 including a storage unit (for example, a hard disk)). , CPU) is executed according to predetermined software.

  In step S <b> 101, the monitoring processing device 50 (the icing snow determination unit 51) receives the icing snow amount from the power transmission line icing snow monitoring device 10 and stores it. More specifically, the monitoring processing device 50 receives the amount of icing snow and the temperature data, and stores the time received for each transmission line icing snow monitoring device 10 in the storage unit in association with each other. Thereafter, the power transmission line icing snow monitoring device 10 moves the process to step S102.

  In step S102, the monitoring processing device 50 (the icing snow determination unit 51) determines whether or not the timer is on. More specifically, the monitoring processing device 50 determines whether or not the timer for the power transmission line icing and snow monitoring device 10 corresponding to the received data is on. If this determination is YES, the monitoring processor 50 moves the process to step S106, and if NO, the monitoring processor 50 moves the process to step S103.

  In step S103, the monitoring processing device 50 (icing snow determination unit 51) determines whether or not the amount of icing snow is equal to or greater than a predetermined amount. More specifically, the monitoring processor 50 determines whether or not the received amount of icing snow is a predetermined amount (for example, 1 cm) or more. If this determination is YES, the monitoring processor 50 moves the process to step S104, and if NO, the monitoring processor 50 moves the process to step S101.

  In step S104, the monitoring processing device 50 (the icing snow determination unit 51) determines whether or not the stored amount of icing snow has increased continuously. More specifically, the monitoring processing device 50 increases the amount of icing snow stored in the storage unit in association with the time received for each transmission line icing snow monitoring device 10 for a predetermined increase (for example, for the past 5 minutes). It is determined whether or not it has been increased every 30 seconds. If this determination is YES, the monitoring processor 50 moves the process to step S105, and if NO, the monitoring processor 50 moves the process to step S101.

  In step S105, the monitoring processing device 50 (the icing snow determination unit 51) turns on the timer. More specifically, the monitoring processing device 50 turns on a timer for the power transmission line icing and snow monitoring device 10 corresponding to the received data. Thereafter, the power transmission line icing and snow monitoring device 10 moves the process to step S101.

  In step S106, the monitoring processing device 50 (the icing snow determination unit 51) determines whether or not the icing snow amount is equal to or greater than a predetermined amount. More specifically, the monitoring processor 50 determines whether or not the received amount of icing snow is a predetermined amount (for example, 1 cm) or more. If this determination is YES, the monitoring processor 50 moves the process to step S107, and if NO, the monitoring processor 50 moves the process to step S109.

  In step S107, the monitoring processing device 50 (the icing snow determination unit 51) determines whether or not a predetermined time has elapsed. More specifically, the monitoring processing device 50 determines whether or not the elapsed time by the timer for the transmission line icing and snow monitoring device 10 corresponding to the received data has reached a predetermined time (for example, 30 seconds). If this determination is YES, the monitoring processor 50 moves the process to step S108, and if NO, the monitoring processor 50 moves the process to step S101.

  In step S108, the monitoring processing device 50 (alarm unit 52) outputs an alarm. More specifically, the monitoring processing device 50 turns on an alarm lamp for notifying icing snow in the power transmission line icing / snow monitoring device 10 corresponding to the received data, outputs an alarm sound, outputs an alarm message, and the like. I do. Thereafter, the power transmission line icing and snow monitoring device 10 moves the process to step S101.

  In step S109, the monitoring processing device 50 (the icing snow determination unit 51) turns off the timer. More specifically, the monitoring processing device 50 turns off the timer for the power transmission line icing and snow monitoring device 10 corresponding to the received data. Thereafter, the power transmission line icing and snow monitoring device 10 moves the process to step S101.

  According to the present embodiment, the power transmission line icing / snow monitoring system 1 includes the power transmission line icing / snow monitoring device 10 and the monitoring processing device 50. In the transmission line icing and snow monitoring device 10, the distance measuring unit 11 provided above the jumper line 103 that is part of the transmission line 102 and suspended on the steel tower 101 that supports the transmission line 102 is used by the distance sensor 20 as a jumper. The distance to the line 103 is measured, and the icing snow amount measuring unit 12 measures the amount of icing snow on the jumper line 103 based on the distance measured by the distance measuring unit 11, and the measured amount of icing snow is transmitted to the repeater 40. Is transmitted to the monitoring processor 50. The monitoring processing device 50 determines whether the icing snow determination unit 51 determines whether or not icing snow has occurred based on the received amount of icing snow, and the alarm unit 52 determines that the icing snow determination unit 51 is icing snow. If judged, an alarm is output. The icing / snow determining unit 51 determines that icing / snowing is occurring when the amount of icing snow continuously increases and exceeds a predetermined amount (for example, 1 cm or more) continuously for a predetermined time (for example, 30 seconds). To do. Therefore, the transmission line icing snow monitoring system 1 can reliably detect icing snow on the transmission line 102.

As mentioned above, although embodiment of this invention was described, this invention is not restricted to embodiment mentioned above.
For example, although the power transmission line icing snow monitoring device 10 transmits the measured icing snow amount data to the monitoring processing device 50, the measured distance data may be transmitted. In this case, the monitoring processing device 50 stores, for each power transmission line icing and snow monitoring device 10, the basic distance to the jumper line when there is no icing snow, transmitted from the power transmission line icing and snow monitoring device 10, and stored. The amount of icing snow is calculated by subtracting the transmitted distance data from the distance.
The effects described in the embodiments of the present invention are only the most preferable effects resulting from the present invention, and the effects of the present invention are limited to those described in the embodiments of the present invention. is not.

DESCRIPTION OF SYMBOLS 1 Transmission line icing snow monitoring system 10 Transmission line icing snow monitoring apparatus 11 Distance measuring part 12 icing snow amount measuring part 13 Power supply part 20 Distance sensor 40 Repeater 50 Monitoring processing apparatus 51 icing snow judging part 52 Alarm part

Claims (4)

A transmission line icing snow monitoring system for monitoring the amount of icing snow on a transmission line,
A distance measuring means that is part of the power transmission line and is provided above a jumper wire suspended from a steel tower that supports the power transmission line;
Based on the distance measured by the distance measuring means, the icing snow amount measuring means for measuring the amount of icing snow on the jumper line;
Icing snow determination means for determining whether or not icing snow is based on the icing snow amount measured by the icing snow amount measuring means;
An alarm means for outputting an alarm when it is determined that the icing snow determination means is icing snow;
Power transmission line icing snow monitoring system. The icing snow determination means includes
When the amount of icing and snowing is a predetermined amount or more continuously over a predetermined time, it is determined that icing and snowing.
The power transmission line icing snow monitoring system according to claim 1. A power transmission line icing snow monitoring device that measures the amount of icing snow that has landed on a power transmission line and transmits the measured amount of icing snow to a monitoring processing device,
A distance measuring means that is a part of the power transmission line and is provided above the jumper wire suspended on a steel tower that supports the power transmission line, and measures a distance from the jumper wire,
Based on the distance measured by the distance measuring means, the icing snow amount measuring means for measuring the amount of icing snow on the jumper line;
Transmitting means for transmitting data on the amount of icing snow measured by the icing snow amount measuring means to the monitoring processing device;
A transmission line icing snow monitoring device comprising: The power transmission line icing / snow monitoring device according to claim 3, further comprising a power supply unit that supplies power to the distance measuring unit, the icing snow amount measuring unit, and the transmitting unit based on an induced voltage by the transmission line.

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